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Characterization of arcs in ICRF transmission lines

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Title: Characterization of arcs in ICRF transmission lines
Authors: D’Inca, R.1 rodolphe.dinca@ipp.mpg.de, Onyshchenko, A.1, Braun, F.1, Siegl, G.1, Bobkov, V.1, Faugel, H.1, Noterdaeme, J.-M.1,2
Source: Fusion Engineering & Design. Feb2009, Vol. 84 Issue 2-6, p685-688. 4p.
Subjects: Electric arc, Electric lines testing, Radio antennas, Radio frequency, Plasma heating, High voltages, Electric breakdown, Direct currents
Abstract: Abstract: Too high voltages can cause arcs to develop within coaxial transmission lines of ICRF antennas. To avoid damage, arcing must be detected and the RF power switched off. To ensure a high level of safety, the specifications of the detectors have to be based on a fine characterization of arcs. A test bench comprising a coaxial resonator and a fast acquisition system makes it possible to analyze the effects of breakdowns on power, voltage, pressure and DC current in the electrodes. For different types of breakdowns (multipactor, vacuum arc and gas discharge) and different configurations (presence or not of magnetic field, level of injected power), we investigate the processes involved in the specific development of an arc inside a RF coaxial line. The resulting classification of phenomena and the impact on the operational system requirements are discussed. [Copyright &y& Elsevier]
Copyright of Fusion Engineering & Design is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 41683938
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Characterization of arcs in ICRF transmission lines
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  Data: <searchLink fieldCode="JN" term="%22Fusion+Engineering+%26+Design%22">Fusion Engineering & Design</searchLink>. Feb2009, Vol. 84 Issue 2-6, p685-688. 4p.
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  Data: <searchLink fieldCode="DE" term="%22Electric+arc%22">Electric arc</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+lines+testing%22">Electric lines testing</searchLink><br /><searchLink fieldCode="DE" term="%22Radio+antennas%22">Radio antennas</searchLink><br /><searchLink fieldCode="DE" term="%22Radio+frequency%22">Radio frequency</searchLink><br /><searchLink fieldCode="DE" term="%22Plasma+heating%22">Plasma heating</searchLink><br /><searchLink fieldCode="DE" term="%22High+voltages%22">High voltages</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+breakdown%22">Electric breakdown</searchLink><br /><searchLink fieldCode="DE" term="%22Direct+currents%22">Direct currents</searchLink>
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  Data: Abstract: Too high voltages can cause arcs to develop within coaxial transmission lines of ICRF antennas. To avoid damage, arcing must be detected and the RF power switched off. To ensure a high level of safety, the specifications of the detectors have to be based on a fine characterization of arcs. A test bench comprising a coaxial resonator and a fast acquisition system makes it possible to analyze the effects of breakdowns on power, voltage, pressure and DC current in the electrodes. For different types of breakdowns (multipactor, vacuum arc and gas discharge) and different configurations (presence or not of magnetic field, level of injected power), we investigate the processes involved in the specific development of an arc inside a RF coaxial line. The resulting classification of phenomena and the impact on the operational system requirements are discussed. [Copyright &y& Elsevier]
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  Data: <i>Copyright of Fusion Engineering & Design is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.fusengdes.2008.12.045
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        Text: English
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        PageCount: 4
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        Type: general
      – SubjectFull: Electric lines testing
        Type: general
      – SubjectFull: Radio antennas
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      – SubjectFull: Radio frequency
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      – SubjectFull: Plasma heating
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      – SubjectFull: High voltages
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      – SubjectFull: Electric breakdown
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      – SubjectFull: Direct currents
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      – TitleFull: Characterization of arcs in ICRF transmission lines
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              Text: Feb2009
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              Y: 2009
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